<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>test</title>
    <style>
        .son {
            position: absolute;
            top: 25px;
            left: 70px;
            width: 170px;
            height: 170px;
            font-size: 15px;
            text-align: center;
            /*line-height: 70px;*/
            background-color: #f1b367;
        }

        .fa1 {
            position: relative;
            float: right;
            width: 260px;
            height: 260px;
            /*margin-top: 70px;*/
            background: #57f372;
            margin: 70px auto;
        }

        .fa2 {
            position: relative;
            width: 400px;
            height: 400px;
            background: #5188e8;
            margin: 200px auto;
        }

    </style>
</head>
<body>
    <div class="fa2">
        <div class="fa1">
            <div class="son">
                <p>绝对定位</p>
                <p>position: absolute;</p>
                <p>top: 25px;</p>
                <p>left: 70px;</p>
            </div>
        </div>
    </div>
</body>
</html>